U.S. lawmakers are investigating whether U.S. Environmental Protection Agency staff influenced the World Health Organization’s review of glyphosate and its finding that the herbicide probably causes cancer, according to a letter sent to the agency on Tuesday.
The letter from the U.S. House of Representatives Committee on Science, Space and Technology is part of an ongoing investigation into the agency after the EPA posted and withdrew an internal report that said glyphosate was not cancer causing.
One question that lawmakers are trying to answer, according to legislative sources, is whether EPA staff allowed personal bias to colour the agency’s scientific review of glyphosate, the chemical in Monsanto Co’s Roundup herbicide.
Some EPA staff participated in both the U.S. review and the WHO review. While the committee’s line of investigation was not clear, lawmakers cited the contradictory findings of the two reviews.